[PATCH] sim hot swap: improved error management

Tue Jul 25 09:24:17 UTC 2017

> Thanks for the patch.  It doesn't seem to be working here unfortunately.

this is  the patch to improve SIM hot swap error management in both AT and
MBIM based modems :)

The patch for GE910-QUAD is in thread  "[PATCH] telit-plugin: ignore QSS
when SIM-ME interface is locked"

On Tue, 25 Jul 2017 at 10:59 Tim Small <tim at seoss.co.uk> wrote:

> Hi Carlo,
>
> Thanks for the patch.  It doesn't seem to be working here unfortunately.
>  It looks like AT+CSIM=1 is issued, but the corresponding AT+CSIM=0
> command isn't, so the SIM is still locked for direct interaction, so
> subsequent AT commands are getting SIM not present responses.  It looks
> like the trouble starts when an ATV1 command is issued in the middle of
> the CSIM PUK enquiries?
>
> Just to clarify this is a Telit GE910-QUAD (most recent firmware) with a
> single serial connection (via a USB to UART adaptor at the moment since
> I'm debugging with my PC), without using CMUX mode.
>
> Full trace here, with excerpts included below...
>
>
> https://gist.github.com/tim-seoss/d175482c56072a0d303d315ca7353eb5#file-sim-hot-swap-debug-L795
>
> Cheers,
>
> Tim.
>
> 19.623477] SIM is ready, running after SIM unlock step...
> 19.623513] (ttyUSB0) device open count is 1 (close)
> 21.306803] (ttyUSB0) device open count is 2 (open)
> 21.306889] (ttyUSB0): --> 'AT+CSIM=1<CR>'
> 21.329374] (ttyUSB0): <-- '<CR>'
> 21.329663] (ttyUSB0): <-- '<LF>O'
> 21.329813] (ttyUSB0): <-- 'K<CR><LF>'
> 21.329858] (ttyUSB0) device open count is 3 (open)
> 21.329887] (ttyUSB0) device open count is 2 (close)
> 21.329933] (ttyUSB0): --> 'AT+CSIM=10,0020000100<CR>'
> 21.351378] (ttyUSB0): <-- '<CR><LF>#QSS: 0<CR><LF>'
> 21.351811] QSS: status changed 'sim-inserted -> sim-removed
> 21.352036] QSS: SIM swap detected
> 21.352490] load PIN unlock retries got no response: AT command was
> cancelled
> 21.352742] (ttyUSB0) device open count is 3 (open)
> 21.352935] (ttyUSB0) device open count is 2 (close)
> 21.353081] [device /sys/devices/pci0000:00/0000:00:14.0/usb1/1-9]
> creating modem with plugin 'Telit' and '1' ports
> 21.353650] (ttyUSB0) type 'at' claimed by
> /sys/devices/pci0000:00/0000:00:14.0/usb1/1-9
> 21.353902] (/sys/devices/pci0000:00/0000:00:14.0/usb1/1-9) tty/ttyUSB0
> at (primary)
> 21.354059] (/sys/devices/pci0000:00/0000:00:14.0/usb1/1-9) tty/ttyUSB0
> data (primary)
> 21.357925] (ttyUSB0) opening serial port...
> 21.358122] (ttyUSB0): couldn't set serial port closing_wait to none:
> Inappropriate ioctl for device
> 21.358157] (ttyUSB0): setting up baudrate: 115200
> 21.358181] (ttyUSB0) device open count is 1 (open)
> 21.358193] (ttyUSB0): running init sequence...
> 21.358218] (ttyUSB0) device open count is 2 (open)
> 21.358244] (ttyUSB0) device open count is 3 (open)
> 21.358263] Modem recreated for device
> '/sys/devices/pci0000:00/0000:00:14.0/usb1/1-9'
> 21.358546] loading current capabilities...
> 21.358574] (ttyUSB0) device open count is 4 (open)
> 21.358596] (ttyUSB0): --> 'AT+CSIM=10,002C000100<CR>'
> 21.358614] (ttyUSB0): --> 'ATE0<CR>'
> 21.366384] (ttyUSB0): <-- '<CR>'
> 21.366594] (ttyUSB0): <-- '<LF>'
> 21.366728] (ttyUSB0): <-- '+C'
> 21.366813] (ttyUSB0): <-- 'S'
> 21.366907] (ttyUSB0): <-- 'I'
> 21.366984] (ttyUSB0): <-- 'M'
> 21.367066] (ttyUSB0): <-- ':'
> 21.367152] (ttyUSB0): <-- ' '
> 21.367237] (ttyUSB0): <-- '4'
> 21.367330] (ttyUSB0): <-- ','
> 21.367432] (ttyUSB0): <-- '"'
> 21.367511] (ttyUSB0): <-- '6'
> 21.367593] (ttyUSB0): <-- '3'
> 21.367674] (ttyUSB0): <-- 'C'
> 21.367756] (ttyUSB0): <-- '3'
> 21.367839] (ttyUSB0): <-- '"'
> 21.367925] (ttyUSB0): <-- '<CR>'
> 21.368013] (ttyUSB0): <-- '<LF>'
> 21.368096] (ttyUSB0): <-- '<CR>'
> 21.368174] (ttyUSB0): <-- '<LF>'
> 21.368286] (ttyUSB0): <-- 'O'
> 21.368498] (ttyUSB0): <-- 'K'
> 21.368582] (ttyUSB0): <-- '<CR><LF>'
> 21.368627] (ttyUSB0): --> 'ATV1<CR>'
> 21.381552] load PUK unlock retries got no response: AT command was
> cancelled
> 21.381615] (ttyUSB0) device open count is 1 (close)
> 21.381641] load PIN2 unlock retries got no response: No AT port
> available to run command
> 21.381665] load PUK2 unlock retries got no response: No AT port
> available to run command
> 21.381685] Couldn't unlock SIM card: No AT port available to run command
> 21.381713] Couldn't load unlock retries: 'Could not get any of the SIM
> unlock retries values'
> 21.381858] loading SIM identifier...
> 21.382001] loading SIM identifier...
> 21.382025] couldn't load SIM identifier: 'No AT port available to run
> command'
> 21.382042] loading IMSI...
> 21.382063] couldn't load IMSI: 'No AT port available to run command'
> 21.382082] loading Operator ID...
> 21.382103] couldn't load Operator identifier: 'No AT port available to
> run command'
> 21.382116] loading Operator Name...
> 21.382139] couldn't load Operator name: 'No AT port available to run
> command'
> 21.382190] loading own numbers...
> 21.382213] couldn't load list of Own Numbers: 'No AT port available to
> run command'
> 21.382260] couldn't load current Bands: 'No AT port available to run
> command'
> 21.382325] couldn't initialize the modem: 'Operation was cancelled'
> 21.382360] (ttyUSB0) device open count is 0 (close)
> 21.382372] (ttyUSB0) closing serial port...
> 21.382383] (ttyUSB0): serial port closing_wait was reset!
> 21.382399] (ttyUSB0): couldn't set serial port closing_wait to none:
> Inappropriate ioctl for device
> 21.382417] (ttyUSB0) serial port closed
> 21.382443] (ttyUSB0) forced to close port
> 21.772444] (ttyUSB0): <-- '<CR>'
> 21.772749] (ttyUSB0): <-- '<LF>+'
> 21.772834] (ttyUSB0): <-- 'CGR'
> 21.772909] (ttyUSB0): <-- 'E'
> 21.772990] (ttyUSB0): <-- 'G'
> 21.773060] (ttyUSB0): <-- ':'
> 21.773134] (ttyUSB0): <-- ' '
> 21.773321] (ttyUSB0): <-- '0<CR>'
> 21.773416] (ttyUSB0): <-- '<LF>'
> 24.306814] (ttyUSB0): --> 'AT+CMEE=1<CR>'
> 24.324637] (ttyUSB0): <-- '<CR>'
> 24.324963] (ttyUSB0): <-- '<LF>O'
>
>
>
>
>
> --
> South East Open Source Solutions Limited
> Registered in England and Wales with company number 06134732.
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>
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